Convert Images to PDFs

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Convert images to PDF using the pdf endpoint.

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The pdf endpoint makes converting images to PDF a breeze. Supported image types include the following nine common image types: JPEG, PNG, BMP, EMF, WMF, EXIF, JPEG2000, GIF, and TIFF.

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The following examples illustrate converting a TIFF and a PNG image to a combined PDF.

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You can also add an image to a PDF you create from scratch or add to an existing PDF.

• Add Text, Images, Lines, and Rectangles to PDFs
• Add Text, Images, Lines, and Rectangles to Existing PDFs

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Check out Getting Started and Task Roadmap if you are new to The DynamicPDF API.

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See the image input type documentation for more information.

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Calling Endpoint Directly

The following JSON instructions document illustrates converting two different images to a combined PDF.

{
  "author": "CeteSoftware",
  "creator": "DynamicPDF Cloud Api",	
  "inputs": [
	{
      "type": "image",
	  "resourceName":"testimage.tif",
      "pageWidth": 612,
	  "pageHeight":1008,
	  "expandToFit":false,
	  "align": "center",
	  "vAlign": "center"	  
	},
	{
      "type": "image",
	  "resourceName":"dynamicpdfLogo.png",
      "pageWidth": 1008,
	  "pageHeight":612,
	  "expandToFit":true,
	  "align": "center",
	  "vAlign": "center"	  
	}
  ]
}

curl --location 'https://api.dpdf.io/v1.0/pdf'
--header 'Authorization: Bearer DP.BKMFqqItEDZb9iBeSAJvzZAgqhH6oyY9SBiKezfyw+rTRosKxx0oD9f9'
--form 'Instructions=@C:/temp/solutions/image-conversion/instructions.json'
--form 'Resource=@C:/temp/solutions/image-conversion/testimage.tif'
--form 'Resource=@C:/temp/solutions/image-conversion/dynamicpdfLogo.png'

Calling Endpoint Using Client Library

The following examples illustrate converting two images to a combined PDF using the six different client libraries.

C# (.NET)

public static void Run(string apiKey, string basePath, string outputPath)
{
    Pdf pdf = new Pdf();
    pdf.ApiKey = apiKey;

    ImageResource imageResource = new ImageResource(basePath + "testimage.tif");
    ImageInput imageInput = pdf.AddImage(imageResource);
    imageInput.Align = Align.Center;
    imageInput.VAlign = VAlign.Center;
    imageInput.ExpandToFit = false;
    imageInput.PageHeight = 1008;
    imageInput.PageWidth = 612;
    
    ImageResource imageResourceTwo = new ImageResource(basePath + "dynamicpdfLogo.png");
    ImageInput imageInputTwo = pdf.AddImage(imageResourceTwo);

    imageInputTwo.Align = Align.Center;
    imageInputTwo.VAlign = VAlign.Center;
    imageInputTwo.ExpandToFit = true;
    imageInputTwo.PageHeight = 612;
    imageInputTwo.PageWidth = 1008;

    PdfResponse pdfResponse = pdf.Process();
    
    if (pdfResponse.IsSuccessful)
    {
        File.WriteAllBytes(outputPath + "/convert-img-to-pdf-output.pdf", pdfResponse.Content);
    }
    else
    {
        Console.WriteLine(pdfResponse.ErrorJson);
    }
}

Source: ImageConversion.cs

Java

static async Run() {
              
	var pdf = new Pdf();
    
    var imageResource = new ImageResource(Constants.BasePath + "image-conversion/testimage.tif")
    var imageResource2 = new ImageResource(Constants.BasePath + "image-conversion/dynamicpdfLogo.png")
    
	var imageInput = new ImageInput(imageResource);
	var imageInput2 = new ImageInput(imageResource2);
       
	imageInput.expandToFit = false;
    imageInput.align = "center";
    imageInput.vAlign = "center";
    imageInput.pageHeight = 1008;
    imageInput.pageWidth = 612;

    imageInput2.expandToFit = true;
    imageInput2.align = "center";
    imageInput2.vAlign = "center";
    imageInput2.pageHeight = 612;
    imageInput2.pageWidth = 1008;

    pdf.inputs.push(imageInput);
    pdf.inputs.push(imageInput2);

    pdf.apiKey =  "DP.--api-key--";
        
    var res = await pdf.process();
        
    if (res.isSuccessful) {
    	var outFile = Constants.OutputPath + "image-conversion-output.pdf";
    	var outStream = fs.createWriteStream(outFile);
    	outStream.write(res.content);
    outStream.close();
    } else {
        console.log(res.errorJson);
    }
}

Source: ImageConversion.js

Node.js

public static void Run(String apiKey, String basePath)
{
	Pdf pdf = new Pdf();
	pdf.setApiKey(apiKey);

	ImageResource imageResource = new ImageResource(basePath + "testimage.tif");
	ImageInput imageInput = pdf.addImage(imageResource);
	imageInput.setAlign(Align.CENTER);
	imageInput.setVAlign(VAlign.CENTER);
	imageInput.setExpandToFit(false);
	imageInput.setPageHeight(1008);
	imageInput.setPageWidth(612);

	ImageResource imageResource2 = new ImageResource(basePath + "dynamicpdfLogo.png");
	ImageInput imageInput2 = pdf.addImage(imageResource2);
	imageInput2.setAlign(Align.CENTER);
	imageInput2.setVAlign(VAlign.CENTER);
	imageInput2.setExpandToFit(false);
	imageInput2.setPageHeight(612);
	imageInput2.setPageWidth(1008);
	imageInput2.setScaleX((float).5);
	imageInput2.setScaleY((float).5);

	pdf.setApiKey(apiKey);
	PdfResponse response = pdf.process();

	if(response.getIsSuccessful())
	{
		try {
			FileUtils.writeByteArrayToFile(new File(DynamicPdfCloudApiExamples.OUTPUT_PATH + "/images-convert-pdf-output.pdf"),
			response.getContent());
		} catch (IOException e) {
			e.printStackTrace();
		}
	} else
	{
		System.out.println(response.getErrorJson());
	}
}

Source: ImageConversion.java

PHP

public static function Run(string $apikey, string $path, string $outputPath)
{
    $pdf = new Pdf();
    $pdf->ApiKey = $apikey;

    $imageResource = new ImageResource($path . "testimage.tif");
    $imageResource2 = new ImageResource($path . "dynamicpdfLogo.png" );

    $imageInput = $pdf->AddImage($imageResource);
    $imageInput2 = $pdf->AddImage($imageResource2);
        
    $imageInput->VAlign = VAlign::Center;
    $imageInput->Align = Align::Center;
    $imageInput->PageHeight = 1008;
    $imageInput->PageWidth = 612;
    $imageInput->ExpandToFit = false;
        
    $imageInput2->VAlign = VAlign::Center;
    $imageInput2->Align = Align::Center;
    $imageInput2->PageHeight = 612;
    $imageInput2->PageWidth = 1008;
    $imageInput2->ExpandToFit = true;
        
    $imageInput->Align = Align::Center;
    $imageInput2->VAlign = VAlign::Top;
       
    $response = $pdf->Process();

    if($response->IsSuccessful)
    {
        file_put_contents($outputPath . "image-conversion-output.pdf", $response->Content);
    } else {
        echo("Error: ");
        echo($response->StatusCode);
        echo($response->ErrorJson);
    }
}

Source: ImageConversion.php

GO

func main() {
	pr := endpoint.NewPdf()
	pr.Endpoint.ApiKey = apiKey

	imageResource1 := resource.NewImageResourceWithResourcePath(basePath+"testimage.tif", "testimage.tif")

	imageInput1 := input.NewImagewithImageResource(imageResource1)
	imageInput1.Align = position.Center

	imageInput1.ExpandToFit = false
	imageInput1.SetPageHeight(1008)
	imageInput1.SetPageWidth(612)
	imageInput1.VAlign = position.Top
	imageInput1.Align = position.Center

	pr.Inputs = append(pr.Inputs, imageInput1)

	imageResource2 := resource.NewImageResourceWithResourcePath(basePath+"dynamicpdfLogo.png", "dynamicpdfLogo.png")
	imageInput2 := pr.AddImage(imageResource2)
	imageInput2.ExpandToFit = false
	imageInput2.SetPageWidth(1008)
	imageInput2.SetPageHeight(612)
	imageInput2.VAlign = position.Middle
	imageInput2.Align = position.Center
	imageInput2.ScaleX = .5
	imageInput2.ScaleY = .5

	resp := pr.Process()
	res := <-resp

	if res.IsSuccessful() == false {
		if res.ClientError() != nil {
			fmt.Print("Failed with error: " + res.ClientError().Error())
		} else {
			fmt.Print("Failed with error: " + res.ErrorJson())
		}
	} else {
		os.WriteFile(outputPath,
			res.Content().Bytes(), os.ModeType)
	}
}

Source: image-conversion.go

Python

def image_conversion_example(apikey, full_path):
    
    pdf=Pdf()
    pdf.api_key = apikey
    pdf.author = "John Doe"
    pdf.title = "My Blank PDF Page"

    imageResource = ImageResource(full_path + "testimage.tif")
    imageResource2 = ImageResource(full_path + "dynamicpdfLogo.png")

    imageInput =  pdf.add_image(imageResource)
    imageInput.expand_to_fit = False
    imageInput.page_width = 612
    imageInput.page_height = 1008
    imageInput.v_align = VAlign.Center
    imageInput.align = Align.Center
    
    imageInput2 = pdf.add_image(imageResource2)
    imageInput2 = ImageInput(imageResource)
    imageInput2.expand_to_fit = True
    imageInput2.page_width = 1008
    imageInput2.page_height = 612
    imageInput2.v_align = VAlign.Center
    imageInput2.align = Align.Center

    response = pdf.process() 

    if response.is_successful:
         with open(output_path + "image-conversion.pdf", "wb") as output_file:
            output_file.write(response.content)
    else:
        print(response.error_id)

Source: ImageConversion.py

 Check out our blog for tips and tutorials!

info

The pdf endpoint takes a JSON instructions document that provides instructions for creating, transforming, merging, and formatting inputs into a combined PDF. Refer to documentation on the instructions schema for information on how to use the pdf endpoint.

• Instructions Overview
• JSON Instructions Schema
• Instructions Schema Diagram
• Instructions Schema
• pdf Inputs Overview